Armstrong photographs Aldrin removing an instrument called the passive seismometer.

Here's a GIF of the same action:

Once they had conducted their experiments and taken many photos, it was finally time to go home. They shot these images out the windows of the lander.

Apollo Lunar Surface Journal contributor Bob Farwell even added the image of Armstrong and Aldrin erecting the flag that a camera mounted to the lander took to give a full view of what that looked like.